Anton S Nikitin

US Patent:

8338777, Dec 25, 2012

Filed:

Sep 8, 2010

Appl. No.:

12/877423

Inventors:

Anton Nikitin - Houston TX, US
Alexandr Vinokurov - Novosibirsk, RU

Assignee:

Bake Hughes Incorporated - Houston TX

International Classification:

G01V 5/08

US Classification:

2502696

Abstract:

An apparatus for performing an operation in a borehole penetrating the earth includes a borehole tool and a neutron source within the borehole tool that emits neutron-alpha particles pairs as the result of a nuclear reaction. The apparatus also includes an alpha particle detector within the borehole tool arranged to detect when an alpha particle emitted by the neutron source strikes it and a gamma ray detector to detect gamma rays produced as a result of interactions between neutrons produced by the neutron source and at least one material in an area of interest outside of the borehole. The apparatus also includes a processing system that determines a characteristic of the area of interest based on a time difference between when the alpha particle strikes the alpha particle detector and a time when one or more gamma rays strikes the gamma ray detector.

US Patent:

8455812, Jun 4, 2013

Filed:

Jul 30, 2010

Appl. No.:

12/846989

Inventors:

Anton Nikitin - Houston TX, US
Alexandr A. Vinokurov - Novosibirsk, RU
Richard R. Pemper - Sugar Land TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 5/04
G06F 19/00
H01L 31/18

US Classification:

250256, 250261

Abstract:

An instrument for performing measurements downhole includes: at least one gamma-ray detector with azimuthal sensitivity equipped for discriminating energy of incident gamma-rays. This instrument is equipped with or without a neutron or gamma-ray source. A method and computer program product providing the azimuthal sensitivity of the instrument is provided.

US Patent:

20100187413, Jul 29, 2010

Filed:

Jan 11, 2010

Appl. No.:

12/685028

Inventors:

Rocco DiFoggio - Houston TX, US
Anton Nikitin - Houston TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01V 5/00

US Classification:

2502691, 977742, 977762, 977902

Abstract:

An apparatus for estimating a property of a subterranean material, the apparatus including: a photon induced emission device configured to be disposed in a borehole penetrating the subterranean material and to provide an output related to an induced emission interaction with a received photon that generates an electron that is used for providing the output; wherein the output is used for estimating the property.

US Patent:

20100223010, Sep 2, 2010

Filed:

Jan 27, 2010

Appl. No.:

12/694993

Inventors:

Anton Nikitin - Houston TX, US
Alexandr A. Vinokurov - Novosibirsk, RU
Rocco DiFoggio - Houston TX, US
Mikhail V. Korjik - Minsk, BY

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01V 5/12

US Classification:

702 8

Abstract:

A gamma ray detector uses a scintillation detector having a response that matches a response characteristic of a photodiode. The detector may be used to measure natural gamma rays and/or gamma rays produced by interaction of neutrons from a neutron source with the earth formation.

US Patent:

20120267519, Oct 25, 2012

Filed:

Oct 18, 2011

Appl. No.:

13/275775

Inventors:

Anton Nikitin - Houston TX, US
Rocco DiFoggio - Houston TX, US
Alexandr Vinokurov - Novosibirsk, RU
Mikhail Korjik - Minsk, BY

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01V 8/00
G01T 1/20

US Classification:

250256, 250368, 250366

Abstract:

Disclosed is an apparatus configured to detect radiation at high temperatures in a borehole penetrating the earth. The apparatus includes a scintillation material that interacts with the radiation to generate photons, at least one solid-state photodetector optically coupled to the scintillation material and configured to detect the radiation by detecting the generated photons, and at least one optical element disposed between the scintillation material and the at least one solid-state photodetector and configured to concentrate the photons generated in the scintillation material onto the at least one solid-state photodetector.

US Patent:

20120312994, Dec 13, 2012

Filed:

Apr 30, 2012

Appl. No.:

13/459486

Inventors:

Anton Nikitin - Houston TX, US
Loren Patrick Roberts - Humble TX, US
Nikolay N. Velker - Novosibirsk, RU
Alexandr A. Vinokurov - Novosibirsk, RU

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01T 3/06
G01T 1/20

US Classification:

250362, 250368, 250367

Abstract:

A scintillation detector includes: a photodetector; a scintillating material configured to emit light in response to exposure to ionization particles; an optically transparent material having a light absorption coefficient that is less than a light absorption coefficient of the scintillating material, the optically transparent material optically coupled to a surface of the scintillating material and configured to transmit the emitted light; and a reflective material at least partially surrounding the scintillating material and the optically transparent material, the reflective material configured to reflect the emitted light and direct the emitted light toward the photodetector.

US Patent:

20120326017, Dec 27, 2012

Filed:

Nov 18, 2011

Appl. No.:

13/299818

Inventors:

Anton Nikitin - Houston TX, US
Alexandr A. Vinokurov - Novosibirsk, RU

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01V 5/10
G01V 5/00

US Classification:

2502697, 250265

Abstract:

A method of calculating a formation characteristic includes measuring with at least two detectors spaced apart from each other an intensity of gamma rays, and calculating the formation characteristic by calculating a ratio of the intensity of the gamma rays detected by the two detectors.

US Patent:

20120326048, Dec 27, 2012

Filed:

Jun 19, 2012

Appl. No.:

13/527000

Inventors:

Anton Nikitin - Houston TX, US
Alexandr A. Vinokurov - Novosibirsk, RU

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01T 1/16

US Classification:

250393

Abstract:

A pulsed neutron source is used in a porosity logging tool with a single gamma ray detector coated with a neutron absorbing material. By using a ratio of the spectral peak associated with hydrogen to a spectral peak associated with the neutron absorbing material, the formation porosity is estimated.